欢迎来到天天文库
浏览记录
ID:53033107
大小:256.50 KB
页数:3页
时间:2020-04-14
《山东博山50年暴雨变化特征分析-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、安徽农业科学,JournalofAnhuiA.Sci.2015,43(21):229—231责任编辑黄小燕责任校对李岩山东博山50年暴雨变化特征分析Y-Y.东,宋中玲,柳红(1.山东省淄博市博山区气象局,山东博山255200;2.山东省淄博市气象局,山东淄博255048;3.山东省淄博市淄川区气象局,山东淄川255100)摘要利用博山区19642013年的降水观测资料,采用统计和回归方法对博山区5O年来暴雨变化特征进行了分析。结果表明,50年来博山区共有115个暴雨日,年平均暴雨日数为2.3d,暴雨日数年际变化较大,总体呈现增多的趋势,暴雨日数随时间的变化
2、与年降水量随时间的变化有很好的相关性,总体呈现增多的趋势,且线性变化趋势基本一致;暴雨春季出现次数少,夏季最多,秋季次之、多于春季,冬季没有出现,7~8月份是暴雨高峰期,6,9月是暴雨多发期;4、5、10、l1月是暴雨少发期;暴雨具有明显的日变化特征,即暴雨发生在夜间(20:O0~次日08:O0)的频次和雨量均高于白天时段;暴雨初、终日期及初终间日数的年际问振荡幅度较小,且随着年代的增加,暴雨初、终日期呈现延后的趋势,初终间日数呈现缓慢增多的趋势,即暴雨期逐渐延长,这与全球气候变暖的趋势有关。关键词暴雨;周期变化;气候趋势中图分类号S161.6文献标识码A
3、文章编号o517—6611(ioi5)21—229—03AnalysisollVariationCharacteristicsofHeavyRaininBoshan.ShandongProvinceinRecent50YearsWANGWej-dong‘,SONGZhong-ling,LIIJHong。(1.ZiboBoshanAreaMeteorologicalBureau,Boshan,Shandong255200;2.ZiboCityBureauofMeteorology,Zibo,Shandoug255o48;3ZiboZichuanAreaMet
4、eorologicalBureau,g/chuan,Shandong255100)AbstractUsingtheBoshanArearainfallobservationdatafro//11964to2013.stafsticsandregressionmethod.thevationeharacteristiesofheavyrainwereanalyzed.Theresultsshowedthatoverthepast50years,rebuiltonatota1of115heavyraindays,annualaveragerainstormda
5、ysto2.3days,heavyraindaysinterannualchangeisbigger,moregeneraltrends,heavyraindayswith"timeofchangeandtheannualpre—cipitationchangehasgoodcorrelationwithtime,theincreasingnumberofgeneraltrend,andbasicallythesamelineartrend;Heavyrainsless.occurrencesinspring,summer,autumn,mosttimes
6、,morethanspring,winter,July—Augustisthestormpeak,June,Septemberisheavyrain;Al,May,October,Novemberisheavyrainslesshair;Thediurnalvariationoftheheavyrainhasobviouscharacteristics,namelyrainstormoccurredatnight(20:00—08:00)frequencyandrainfallwerehigherthanduringthedaytime;Rainearly
7、,finishingdateandtheearlydaysoftheinterannualoscillationamplitudebetweenthesmall,andwiththeincreaseofs,heavyrainsandenddatedelaytrendsatthebeginningoftheearlydaysbetweentheendshowedatrendofincreasedslowly,therainstormperiodlengthengradually,whichisassociatedwiththetrendofglobalwar
8、ming.KeywordsHeavyrain:Periodicch
此文档下载收益归作者所有